javascript - How can I check to see if a Dojo dialog is loaded? - Stack Overflow

admin管理员组

文章数量:1336613

I am running a function that needs to close a Dojo dialog if it is loaded. How do I check if a dojo dialog is running? Do I use pure JavaScript and check by id if it is undefined?

if (dijit.byId("blah") !== undefined) { 
     destroyRecursive dijit;
}

Or do I use a property of the dialog object like:

isFocusable method
isLoaded property

I am running a function that needs to close a Dojo dialog if it is loaded. How do I check if a dojo dialog is running? Do I use pure JavaScript and check by id if it is undefined?

if (dijit.byId("blah") !== undefined) { 
     destroyRecursive dijit;
}

Or do I use a property of the dialog object like:

isFocusable method
isLoaded property

• javascript
• dojo
• dialog
• gis
• esri

Share Improve this question Follow edited Nov 21, 2011 at 18:28 Jason Plank 2,33655 gold badges3232 silver badges4040 bronze badges asked Jul 20, 2009 at 23:16 shawn deutchshawn deutch 42711 gold badge66 silver badges1010 bronze badges 1

• This is the end function: function bufferAddress(xCoord, yCoord) { if (dijit.byId("selectLocationDlg") !== undefined) { dijit.byId("selectLocationDlg").destroyRecursive(); } // some other code here } – shawn deutch Commented Jul 21, 2009 at 18:03

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 4

Dialog provides two properties you might want to check: isLoaded and open. By digging the code you'll find the following descriptions:

• open: True if Dialog is currently displayed on screen.
• isLoaded: True if the ContentPane has data in it, either specified during initialization (via href or inline content), or set via attr('content', ...) / attr('href', ...) False if it doesn't have any content, or if ContentPane is still in the process of downloading href.

So, you could just:

var dialog = dijit.byId("blah");
if( dialog.open ) {
    dialog.destroy();
}

Do you want to hide it or destroy it?

If you just want to show/hide it you can do the following:

var dialog = dijit.byId('blah');
if (dialog) {
  if (dialog.open) {
    dialog.hide();
  }
  else {
     dialog.show();
  }
}

If you wanted to destory it to free up memory:

var dialog = dijit.byId('blah');
dialog.destory();

I think destroy is recursive since it calls its parent destroy method and one of its parents is dijit.layout.ContentPane.

本文标签： javascriptHow can I check to see if a Dojo dialog is loadedStack Overflow